A method for operating a planar drive system is specified. The planar drive system comprises a stator, a plurality of rotors and a main controller. The stator comprises a plurality of energizable stator conductors. Energizing of stator conductors of the stator can be controlled via the main controller. Each rotor comprises a magnet device having at least one rotor magnet. A magnetic interaction can be produced between energized stator conductors of the stator and the magnet devices of the rotors in order to drive the rotors. At least one individual rotor identifier is assigned to each rotor. An identification of the rotors is carried out by providing position information of the rotors and rotor identifiers of the rotors and linking the provided position information of the rotors to the provided rotor identifiers of the rotors via the main controller.

An electromagnetic apparatus (EMA) for measuring electromagnetic properties of an electrical conductor such as a power cord is provided. Methods of using the EMA are also provided. The EMA includes a plurality of electromagnetic sensors (EMSs) disposed in an array along a length and a width of the EMA. The EMA further includes circuitry such as a microprocessor, communication circuitry, and power circuitry. The circuitry is in electrical communication with the EMSs.

Provided is an electronic apparatus including an in-vehicle determiner, and a notification determiner. An in-vehicle determiner executes in-vehicle determination in which whether a first user being a user of the electronic apparatus is present in a vehicle. A notification determiner executes a determination process in which whether the electronic apparatus notifies outside the electronic apparatus based on a result of the in-vehicle determination.

A method is presented. A machine head is positioned in a desired location relative to a material on a tool using a sensor connected to the machine head and calibrated to detect magnetic material in the tool. An operation is performed on the material using the machine head starting at the desired location.

A processor-implemented method based on an acceleration sensor and a geomagnetic sensor for determining an angular velocity of an object includes: deriving a state variable and a variance of the state variable based on an error quaternion and converting a quaternion-based rotation matrix into an error quaternion-based rotation matrix; calculating an observation matrix and an output matrix of the Kalman filter based on the error quaternion-based rotation matrix; calculating a gain of the Kalman filter based on the transferred variance of the state variable and the observation matrix of the Kalman filter after transferring the state variable and the variance of the state variable through a discretized transfer matrix; calculating a quaternion-based on a calibrated state variable and an estimated quaternion after calibrating the state variable and the variance of the state variable through the gain of the Kalman filter; and calculating angular velocity based on the quaternion.

A linear motor system includes a track and at least one movable member coupled to the track and configured to move along the track. The at least one movable member includes a first element, a second element relatively movable with respect to the first element, and at least one movement detector configured to transmit a movement signal. A processing unit is configured to calculate a movement of the movable member, the second element and/or the first element as a function of the movement signal received from the movement detector.

A linear motor system includes a track and at least one movable member coupled to the track and configured to move along the track. The at least one movable member includes a first element, a second element relatively movable with respect to the first element, and at least one movement detector configured to transmit a movement signal, wherein the movement detector comprises at least one magnet positioned at one of the first or second element, and at least one magnetometer positioned at the other of the first or the second element. The linear motor system also includes a processing unit configured to calculate a movement of the second element with respect to the first element as a function of the movement signal received from the movement detector.

Provided is an electronic apparatus including an in-vehicle determiner, and a notification determiner. An in-vehicle determiner executes in-vehicle determination in which whether a first user being a user of the electronic apparatus is present in a vehicle. A notification determiner executes a determination process in which whether the electronic apparatus notifies outside the electronic apparatus based on a result of the in-vehicle determination.

A method is presented. A machine head is positioned in a desired location relative to a material on a tool using a sensor connected to the machine head and calibrated to detect magnetic material in the tool. An operation is performed on the material using the machine head starting at the desired location.

A mobile phone includes an acceleration sensor for detecting acceleration, a magnetic sensor for detecting magnetism, and a controller for determining a type of moving state based on the acceleration detected by the acceleration sensor and the magnetism detected by the magnetic sensor.